207 



Martin, G. C, 52. 

 Martenet map, 30. 

 Maryland Geological Surve.v, 31. 37, 49, 



50, 51. 

 Mathews. Edward B., 7, 49. 

 McGee, W J, 37, 47. 

 Mcintosh run, 178. 



drainage area of, 178. 

 McWilliams, Alexander, 148, 17G. 

 Meadow Land, 136, 



mechanical analyses of, 137. 

 Mechanicsville, magnetic station at, 180. 

 Meek, I''. B., 45. 

 Mell, C. D.. 18, 183. 

 Meridian line. ISO. 



instructions for using, 180. 

 Morrill, Geo. P., 49. 

 Meteorological stations in county, 17G. 

 Meyer, Otto, 36. 

 Miller, B. L.. 7, 17, 113, 

 Millstone, artesian well at. 124. 

 Miocene, 68. 



local sections of, 79. 



origin of materials of, 80. 



water-horizon in, 123. 

 Morton. S. G.. 34. 40. 



N 



Natural deposits, 113. 

 Newton, E. Bullen, 51. 

 Nomini Cliffs, 72. 

 Norfolk Loam, 126. 



mechanical analyses of, 127. 

 Norfolk Sand, 131. 



mechanical analyses of, 132. 

 Nuttall, Thomas, 32. 



Oakley, artesian wells at, 123. 

 Origin of Lafayette materials. S3, 



of Pliocene materials, SO. 



of Pleistocene materials, 97. 



P 



Patterson, H. J.. 119. 



Pearson, artesian well at. 124. 



Physiography, discussed, 55. 



I'iles, 196. 



I'iney Point, artesian well at. 124. 



I'leistocene, 84. 



origin of materials of. 97. 

 Pliocene, 81. 

 Plum Point, 71, 

 Porto Bello, mean temperatures at. 



precipitation at, 159. 

 Potomac river, section on. 96. 

 Precipitation, discussed. 158. 

 Precipitation at rharlottc Hall. 1 

 Preface, 17. 

 Pulpwood, 195. 



C'uaternary clays, discussed, 115, 



Railway ties, 194. 



Kau, Chas., 46. 



Recent deposits. 96. 



Recent stage, 66. 



Red gum, 188. 



Red juniper, 191. 



Remseu, Ira, 5. 



P.idge. mean temperatures at, 1.1 



Ries. Hcinrich, 51. 



Robinson. Samuel, 40. 



Rogers, H. I)., 43. 



Rogers, W. B., 34, 41, 43, 



St, Clement river, 178, 



drainage area of, 178. 



section on, 90. 

 St. George's island, artesian wells on, 



124. 

 St. Inigoes, artesian wells near, 124. 



mean temperatures at, 155. 



precipitation at, 160. 

 St. Mary's, mean temperatures at, 154. 



precipitation at, 159. 

 St. Mary's County, agricultural condi- 

 tions in, 139. 



artesian wells in, 123. 



building-stone of, 118. 



clays of, 113. 



climate of, 147. 



diatomaceous earth of. 120. 



drainage of, 59. 



dug wells in, 122. 



economic resources of. 113. 



forests of. 1S3. 



geology of. 67. 



gravels of. lis. 



hydrography of. 177. 



magnetic declination in, 179. 



marls of, 119, 



meteorological stations iu. 176. 



miocene in, 68. 



physiography of, 55. 



pleistocene in. 84. 



pliocene in. 81. 



precipitation in. 158. 



recent deposits of, 96. 



sands of, 117. 



soils of, 125. 



soil types in, 126. 



springs in, 121. 



structure of coastal plain in. (il. 



table of precipitation in, 157, 



table of temperatures in, 152, 



temperature conditions in, 151, 



